Please advise if it's impossible for e liquid to cause oral cancer?

E-liquid etc.: There are different brands and ingredients in the liquids used in electronic cigarettes. If it contains nicotine, which many do, there is still potential risk. Personally i would not want to inhale any of these materials. See the following for some basic information. Research your particular brand but take whatever they say with a grain of salt. http://www.v2cigs.com/blog/2013/09/whats-in-your-e-.